Reply
 
Thread Tools Display Modes
 
Old 05-27-2016, 10:27 AM   #1
Senior Member
 
alta825's Avatar
 
Join Date: Apr 2007
Posts: 438
Garage
Odd fridge and separator behavior?

Having some issues with my 02 battery system and hoping someone can help out

Been seeing the house battery voltage drop when the fridge kicks on down to 11.8 or so and when it stops running it goes right back to the 12.6-12.7v, inspected and made sure any connections and ground wires were tight. The house battery is a 2yr old Deka 4D.

Currently camping and I have my Overland Solar portable panel setup and the volt meter will show 12.9-13.1v while the fridge is not running and down to 11.8 when running. Also as soon as the fridge kicks on the separator or isolator (whatever SMB installed in the 02s) clicks.

Could that on the way out? Any field fixes or anything else to check out?? Seems to charge fine when driving and my starter batteries show 12.7 just sitting here not running and they are 3yrs old too

Thanks guys,


D

Sent from my SAMSUNG-SM-G890A using Tapatalk
__________________

__________________
2002 EB51 7.3L w/ Stage 2- UJoint 6" 4x4 Conversion
2001 RB50 V10 Quigley- SOLD
alta825 is offline   Reply With Quote
Old 05-27-2016, 10:29 AM   #2
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,654
I've had the same issue with bad battery ground.. You say you checked battery grounds though. Did you check fridge wiring as well?
__________________

rallypanam is offline   Reply With Quote
Old 05-27-2016, 10:35 AM   #3
Senior Member
 
alta825's Avatar
 
Join Date: Apr 2007
Posts: 438
Garage
I checked the ones I could get at w/o dropping the house battery, and I pulled out the fridge the other day and all was good behind it....
Stumped. Hoping I don't need to drop the house battery again....

Sent from my SAMSUNG-SM-G890A using Tapatalk
__________________
2002 EB51 7.3L w/ Stage 2- UJoint 6" 4x4 Conversion
2001 RB50 V10 Quigley- SOLD
alta825 is offline   Reply With Quote
Old 05-27-2016, 11:14 AM   #4
Senior Member
 
alta825's Avatar
 
Join Date: Apr 2007
Posts: 438
Garage
Ok, where the heck does SMB hide the isolator/separator on 7.3l diesels? The smb manual showed under the coolant tank. Swung it out of the way and it ain't there.

Sent from my SAMSUNG-SM-G890A using Tapatalk
__________________
2002 EB51 7.3L w/ Stage 2- UJoint 6" 4x4 Conversion
2001 RB50 V10 Quigley- SOLD
alta825 is offline   Reply With Quote
Old 05-27-2016, 11:53 AM   #5
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,654
Quote:
Originally Posted by alta825 View Post
Ok, where the heck does SMB hide the isolator/separator on 7.3l diesels? The smb manual showed under the coolant tank. Swung it out of the way and it ain't there.

Sent from my SAMSUNG-SM-G890A using Tapatalk
That's where they generally are.

But check on the frame rail by the secondary battery as well.
rallypanam is offline   Reply With Quote
Old 05-27-2016, 12:22 PM   #6
Senior Member
 
arctictraveller's Avatar
 
Join Date: Mar 2013
Posts: 2,835
I agree with RPA. A large voltage drop under load most often indicates a bad battery with little reserve capacity, but since yours isn't that old the next suspect would be a bad connection (either the ground or positive side would do it) After checking all the easy stuff, you will probably need to drop the battery to check it. My house batterys (2-6 volts)were grounded by a simple bolt through the frame that was corroded. After I cleaned it all up, I saw better charging performance.
__________________
Arctic Traveller
KC6TNI
2001 GTRV
Advanced 4wd
Agile Ride improvement package
www.arctictraveller.com
arctictraveller is offline   Reply With Quote
Old 05-27-2016, 12:55 PM   #7
Senior Member
 
alta825's Avatar
 
Join Date: Apr 2007
Posts: 438
Garage
Grrrrr.... Guess I'll drop the house battery when we get home. Not gonna try to w/o the floor jack

Sent from my SAMSUNG-SM-G890A using Tapatalk
__________________
2002 EB51 7.3L w/ Stage 2- UJoint 6" 4x4 Conversion
2001 RB50 V10 Quigley- SOLD
alta825 is offline   Reply With Quote
Old 05-27-2016, 01:06 PM   #8
Site Team
 
Gooseberry's Avatar
 
Join Date: Jun 2010
Location: Covina
Posts: 1,197
Garage
I just had the same issue and it was the ground to the body that was the first point of contact from the house battery. If you follow the power wire on your alternator it should get you to the separator.


Sent from my iPad using Tapatalk
__________________
Kelly, Claudine, Sophie dog, Bell the redheaded step child and Gooseberry RIP.

Most the time the Copilot is Now Sophie dog the noise maker.

2000 7.3 PS Quigley/RB30 with a 6 window poptop.
Gooseberry is offline   Reply With Quote
Old 05-27-2016, 01:11 PM   #9
Senior Member
 
arctictraveller's Avatar
 
Join Date: Mar 2013
Posts: 2,835
Quote:
Originally Posted by Gooseberry View Post
I just had the same issue and it was the ground to the body that was the first point of contact from the house battery.

My plan is to run a heavy ground wire from the house batterys directly to the alternator. That project is near the top of the list. I'm not sure how or where Sportmobile attaches the ground, but perhaps it's outside the battery box so you don't have to drop it. A floor jack cross beam like one from Harbor Freight for around $40 would probably make it easier and safer to drop the battery. Add in an air ratchet and it sould be pretty quick.
__________________
Arctic Traveller
KC6TNI
2001 GTRV
Advanced 4wd
Agile Ride improvement package
www.arctictraveller.com
arctictraveller is offline   Reply With Quote
Old 05-27-2016, 01:40 PM   #10
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,654
Quote:
Originally Posted by arctictraveller View Post
I'm not sure how or where Sportmobile attaches the ground, but perhaps it's outside the battery box so you don't have to drop it.
Usually directly onto the frame near the aux battery.
__________________

rallypanam is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 06:03 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.